Color Rendering Index Improvement of Commercial Phosphors and Novel Oxy-nitride for White LEDs

• 作 者: ShiqingXu;
• 机 构: College of Materials Science and Engineering,China Jiliang University,Hangzhou,China
• 出 处: The 5th International Congress on Ceramics, ICC5(第五届国际陶瓷大会)
• 发表日期: 2014年期

　　White light-emitting diodes(LEDs)are expected to widely replace current fluorescence lamps in the near future by further increasing their color rendering index and lowering the production cost.Most white LEDs in production today are made of a blue GaN chip covered by a yellowish YAG: Ce phosphor coating.Here,we show a technological improvement of the yellowish YAG: Ce phosphor by fine adjustment of particle morphology and sintering process,where white LEDs with higher color rending index are achieved compared to the commercial phosphors used LEDs.